Put a little of the soil sample into distilled water, dissolve it for a while, put the pH test paper into it and stand for 2 seconds, and then take it out for comparison with the colorimetric card. If pH > 7, it is alkaline soil; if pH < 7, it is acid soil.
Lignite, weathered coal and peat have a structure similar to soil humus, and it is very difficult to predict how and when plants and soil will release humic acid if put (raw material) into the soil. So they're inactive and raw materials for humic acid products.
Humic acid is the remains of animals and plants, mainly the remains of plants. It through the decomposition and transformation of microorganisms, as well as a series of geophysical and chemical processes formed and accumulated aggregates of a class of organic compounds.
Which effect is good? Fulvic Acid Foliar, Compound, or Flush Fertilizer? Fertilizer properties are different, fertilization methods are different. Mineral source fulvic acid compound fertilizer, Mineral source fulvic acid foliar fertilizer, Mineral source fulvic acid flush fertilizer.
For grapes, a high-quality mineral source potassium fulvate is very appropriate. In addition to the more than 12% organic potassium rich in the product itself, it can also promote the growth of grape roots, better absorb fertilizer and potassium around the plant, and improve the utilization rate of potash and other fertilizers, to meet the needs of grape plants for potassium throughout the grow
Humic acid and fulvic acid liquid appear dark brown or brown. If the concentration of liquid is too high or the atomization degree is poor, the water will often leave black spots on the fruit and leaves after evaporation.
Fulvic acid has a lower molecular weight, which is beneficial to the activation, capacity expansion, and desorption of heavy metals. Humic acid has a large molecular weight and the function of reduction and adsorption. It can reduce the availability of heavy metals.
Fulvic acid is an organic colloidal substance with the functions of water absorption and storage.